eja: define matrix basis/space for Cartesian product algebras.

[sage.d.git] / mjo / eja / TODO

diff --git a/mjo/eja/TODO b/mjo/eja/TODO
index 03bf40459e26805a2b2d6e3bae114779f0de57d3..93aa9fb42e6ec6cdba6963db8dacfddd116ba762 100644 (file)
--- a/mjo/eja/TODO
+++ b/mjo/eja/TODO
@@ -1,10 +1,7 @@
-1. Finish CartesianProductEJA: add to_matrix(),
-   random_instance(),... methods. This will require rethinking what a
-   "matrix representation" and "matrix space" means for a cartesian
-   product algebra. Do we want our matrix basis to consist of ordered
-   pairs (or triples, or...)? Should the matrix_space() of the algebra
-   be the cartesian product of the factors' matrix spaces? Can we just
-   fix the matrix basis/space after we call the FDEJA initializer?
+1. Finish CartesianProductEJA: add to_matrix(), random_instance(),...
+   methods. I guess we should create a separate class hierarchy for
+   Cartesian products of RationalBasisEJA? That way we get fast
+   charpoly and random_instance() defined...
 
 2. Add references and start citing them.